Mump 0202 Trun 17 Z Classic Mustang Trunk Detailing Washers

17 The rear bumper is attached to the rear of the car with new hardware and the proper washers. These washers distribute the clamping load and prevent stress cracks in the taillight panel, so be sure to use them (or something similar if you're building a driver). The smaller bolt shown is for the bumper guards, which were already installed.